Heapprofd readme: update flag in example. am: 3ce1cc6b52 am: 3a42761a5c am: 9ca97b4f5f
Heapprofd readme: update flag in example. am: 3ce1cc6b52 am: 3a42761a5c
am: 9ca97b4f5f

Change-Id: I61597b17bb39a32ecf8ff6ee932037420b5bc93e

google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto